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Original illustration of a large armored prehistoric fish swimming among smaller fish in an ancient sea
Dinosaurs & Prehistory Prehistoric marine predators Dunkleosteus Prehistoric marine life Deep time Fish
Dinosaurs & Prehistory - Prehistoric marine predators - Dunkleosteus - Prehistoric marine life - Deep time - Fish
Dinosaurs & Prehistory Prehistoric marine predators Dunkleosteus Prehistoric marine life Deep time Fish

In which geologic period did the prehistoric armored fish Dunkleosteus live?